obsolete_X-linked complicated corpus callosum dysgenesis true OMIM:304100 ICD10:Q04.8 3.41.0 http://purl.obolibrary.org/obo/MONDO_0010569 orphanet X-linked complicated corpus callosum dysgenesis is a historical term used to describe a phenotype now considered to be part of the L1 clinical spectrum (L1 syndrome, see this term). The disorder is characterized by variable spastic paraplegia, mild to moderate intellectual deficit, and dysplasia, hypoplasia or aplasia of the corpus callosum. Replaced with Mondo term.